Studies on the constituents of Beesia calthaefolia and Souliea vaginata. II. Beesioside II, a cyclolanostanol xyloside from rhizomes of Beesia calthaefolia.
摘要:
一种新的三萜木糖苷,即蜜蜂草苷 II(2),熔点 149-151°C,旋光度 [α]D +9.3°,C39H62O<12>·0.5H2O,从蜜蜂草(毛茛科)的干燥根茎中提取,根据化学和物理化学证据,被鉴定为(20S,24R)-16β,18-二乙酰氧基-20,24-环氧-9,19-环羊毛甾烷-3β,15α,25-三醇 3-O-β-D-木糖苷。通过衍生物的 X 射线结构分析,2 的结构得到了证实。
Studies on the constituents of Beesia calthaefolia and Souliea vaginata. II. Beesioside II, a cyclolanostanol xyloside from rhizomes of Beesia calthaefolia.
A new triterpenol xyloside, beesioside II (2), mp 149-151°C, [α]D +9.3°, C39H62O<12>·0.5H2O, from the dried rhizomes of Beesia calthaefolia MAXIM. (Ranunculaceae), was identified as(20S, 24R)-16β, 18-diacetoxy-20, 24-epoxy-9, 19-cyclolanostane-3β, 15α, 25-triol 3-O-β-D-xylopyranoside on the basis of chemical and physicochemical evidence. The structure of 2 was confirmed by an X-ray structure analysis of a derivative.
一种新的三萜木糖苷,即蜜蜂草苷 II(2),熔点 149-151°C,旋光度 [α]D +9.3°,C39H62O<12>·0.5H2O,从蜜蜂草(毛茛科)的干燥根茎中提取,根据化学和物理化学证据,被鉴定为(20S,24R)-16β,18-二乙酰氧基-20,24-环氧-9,19-环羊毛甾烷-3β,15α,25-三醇 3-O-β-D-木糖苷。通过衍生物的 X 射线结构分析,2 的结构得到了证实。